Focus 1.8 petrol 2010: resetting throttle/idle adaptions

[rhyds]

My Focus 1.8 petrol's developed a rather annoying issue which may or may not be related to my recent new inlet manifold flap actuators

In short, when pulling up to a junction with a slightly warm engine (i.e. having driven 100-200 yards) and dipping the clutch the engine would drop to a very low idle (around 750 RPM) then cut out.

When you went to restart the engine would fire up immedately and settle at that low 750-800 RPM idle and it would be fine for the rest of the journey.

Now, my thoughts were that the idle control needed to relearn some adaptions with the new valves, but its been a week of mixed driving and its still not 100%

So, my questions are

1) How long do idle control adaptions take to reset on average?

2) If I reset the adaptions on this car via FORSCAN, do I need to follow a specific driving pattern to ensure good idle control?

[chippie]

My understanding is that adaptations take around 30-40 miles or so of mixed driving….( around town,motorway/fast road use and varying loads..)

I guess if your not happy with the way the car is, then resetting with Forscan and letting it relearn is probably a best option?


Unless of course there is an unrevealed fault elsewhere?

[rhyds]

Jun 29, 2022 11:57:44 GMT 1 chippie said:

My understanding is that adaptations take around 30-40 miles or so of mixed driving….( around town,motorway/fast road use and varying loads..)

I guess if your not happy with the way the car is, then resetting with Forscan and letting it relearn is probably a best option?


Unless of course there is an unrevealed fault elsewhere?

Its possible there's another fault such as a vacuum leak from a hose, but I can't identify any from a quick look.

As you say, it might be worth resetting the adaptions anyway, as they'll eventually come back to where they should be.